Blast pump



FIG. 1 is a side perspective view of the new design of a blast pump;

FIG. 2 is another side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a partially enlarged view thereof, illustrating a portion of the blast pump identified by reference numeral 9 in FIG. 1 .

The broken (dashed) lines show portions of the blast pump that form no part of the claimed design.

The short dash long dash lines found on FIGS. 1 and 9 depict the bounds of the enlargement region, taken from FIG. 1 to be enlarged on FIG. 9 , and form no part of the claimed design. 

CLAIM The ornamental design for a blast pump, as shown and described. 